Multi-band antenna
AssigneeThe Ohio State University Research Foundation
InventorEric Walton
Life of this patent
Estimating the term…
Abstract
Antenna assemblies and corresponding modes of operation are provided where the first antenna assembly of the system is tuned to a first frequency band ν1 and the second antenna assembly of the antenna system is tuned to a second frequency band ν2. The ground plane of the first antenna assembly is configured as a frequency selective surface that is substantially reflective of radiation in the first frequency band and substantially transparent to radiation in the second frequency band. The second ground plane may also be configured as a frequency selective surface and may be reflective of radiation in the second frequency band.
Claims28
An antenna system comprising at least two antenna assemblies, wherein:
- a first antenna assembly of said antenna system is tuned to a first frequency band ν1 and comprises a first array of antenna elements, a first electrical ground plane electromagnetically coupled to said first array of antenna elements, and a first transmission network conductively coupled to said first array of antenna elements;
- a second antenna assembly of said antenna system is tuned to a second frequency band ν2 and comprises a second array of antenna elements, a second electrical ground plane electromagnetically coupled to said second array of antenna elements, and a second transmission network conductively coupled to said second array of antenna elements;
- and
- said first ground plane is configured as a frequency selective surface that is substantially reflective of radiation in said first frequency band and substantially transparent to radiation in said second frequency band.
A method of operating an antenna system comprising at least two antenna assemblies, wherein:
- a first antenna assembly of said antenna system is tuned to a first frequency band ν1 and comprises a first array of antenna elements, a first electrical ground plane electromagnetically coupled to said first array of antenna elements, and a first transmission network conductively coupled to said first array of antenna elements;
- a second antenna assembly of said antenna system is tuned to a second frequency band ν2 and comprises a second array of antenna elements, a second electrical ground plane electromagnetically coupled to said second array of antenna elements, and a second transmission network conductively coupled to said second array of antenna elements;
- said first ground plane is configured as a frequency selective surface that is substantially reflective of radiation in said first frequency band and substantially transparent to radiation in said second frequency band;
- and
- said method comprises orienting respective fields of view defined by said first and second antenna assemblies independently such that such that said first antenna assembly is positioned such that the degree to which said first antenna assembly obstructs the field of view defined by said second antenna assembly varies as said respective fields of view are oriented independently of each other.
Dependencies are inferred from the claim text.